CN106541147B - A kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma - Google Patents
A kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma Download PDFInfo
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
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Abstract
A kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma, it is related to a kind of method for preparing hard magnetic nanometer Fe-Pt particle.The present invention is in order to which the hard magnetic L10 FePt nano particles preparation process for solving to obtain by surface coating method progress high annealing or salt bath process at present is complicated, energy consumption is higher, nano particle pattern is irregular, the uncontrollable technical problem of size.The present invention：First, protect and mixed under gas；2nd, heat；3rd, cool down；4th, wash, dry.The present invention uses simple liquid phase thermal synthesis method, using oleyl amine as solvent, surfactant and reducing agent, high temperature thermal reduction frerrous chloride and potassium chloroplatinate in a nitrogen atmosphere, the hard magnetic L10 FePt nano particles with excellent magnetic energy are prepared in one step, can also further adjust magnetic property, pattern and the size of product by adjusting heating rate and reaction time.
Description
Technical field
The present invention relates to a kind of method for preparing hard magnetic nanometer Fe-Pt particle.
Technical background
Nanometer Fe-Pt particle is due to good chemical stability, high magnetocrystalline anisotropy energy (7 × 106J/cm3)、
High Curie temperature (480 DEG C) and minimum superparamagnetic limit size (2.8-3.3nm), therefore crystallite dimension can be reduced,
Sufficiently high heat endurance is kept simultaneously, so as to obtain smaller record information unit, realizes higher packing density, therefore be
The ideal material of VHD magnetic recording media.Since Sun Shouheng utilized wet chemistry method, using dioctyl ether as solvent, ten in 2000
Six alkane glycol are that reducing agent reduces acetylacetone,2,4-pentanedione platinum, while thermally decompose iron pentacarbonyl, and reacting 30min at 297 DEG C is prepared for single point
Dissipate, iron platinum (fcc-FePt) nano-particle for the superparamagnetism face-centred cubic structure that particle diameter is 4nm.After 600 DEG C of annealing, formed
The face-centered tetragonal structural iron Pt nanoparticle (fct-FePt) of Hard Magnetic phase, i.e. L10 ordered structures.Use it for magnetic recording material,
When the voltage signal that reads back increases to 5000 flux/millimeter from 500, magnetization reversal can still occur in appropriate line density and read back
It is lossless, so as to cause the widely studied of scientists.
But the fcc-FePt nano-particle coercivitys prepared using wet chemistry method are zero, it is impossible to are directly used as magnetic recording etc.
Using.Fcc-FePt nano particles can be transformed into the iron of face-centered tetragonal structure after high annealing (being generally greater than 500 DEG C)
Pt nanoparticle (fct-FePt) just has magnetic recording function.But the annealing one side high energy consumption of such high-temperature, it is unfavorable for
The practical application of FePt nano particles, on the other hand annealing will cause growing up for FePt crystallite dimensions, it is close to be unfavorable for magnetic recording
The raising of degree.In order to reduce the metallic element such as annealing temperature, conventional addition alloying element such as Ag, Cu, Au, Zn, the Sb of researchers
Anneal under nitrogen protection.The method for solving nanoparticle agglomerates at present has Surface coating MgO, MnO or SiO2Deng then carrying out
Acid etch is used after high annealing, or using high annealing after high molecular polymer fixation, or the precursor of iron platinum is mixed with NaCl
Close ball milling and carry out high annealing, then be washed with deionized.
Although hard magnetic L10-FePt nanometers can be obtained by carrying out high annealing or salt bath process by surface coating method
Grain, but preparation process is more complicated, energy consumption is higher, and the pattern of the nano particle prepared is irregular, and size can not
Control.
The content of the invention
The present invention is to solve the hard magnetic obtained at present by surface coating method progress high annealing or salt bath process
L10-FePt nano particles preparation process is complicated, energy consumption is higher, nano particle pattern is irregular, the uncontrollable technology of size
Problem, and a kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma is provided.
The a kind of of the present invention by the method that presoma prepares hard magnetic nanometer Fe-Pt particle of inorganic salts is according to the following steps
Carry out：
First, protect and mixed under gas：Frerrous chloride, potassium chloroplatinate and oleyl amine are added in three-necked flask, stirred in magnetic force
Mix and stir and be passed through nitrogen purge gas 40min under conditions of room temperature, obtain mixture；Described frerrous chloride and the material of potassium chloroplatinate
Amount ratio be 1:(1~1.2)；Described potassium chloroplatinate and the ratio of the amount of the material of oleyl amine are 1:(150~160)；
2nd, heat：By step 1 prepare mixture magnetic agitation and nitrogen protection under conditions of with 5 DEG C/min~10
DEG C/the min rate of heat addition is heated to 200 DEG C from room temperature, then under the conditions of magnetic agitation, nitrogen protection and temperature are 200 DEG C
It is incubated 4h~5h；Added under conditions of magnetic agitation and nitrogen protection with the 1 DEG C/min~5 DEG C/min rate of heat addition from 200 DEG C
Heat is incubated 4h~8h to 350 DEG C under the conditions of being then 350 DEG C in magnetic agitation, nitrogen protection and temperature；
3rd, cool down：Room temperature is naturally cooled under conditions of magnetic agitation and nitrogen protection；
4th, wash, dry：
1., step 3 is cooled down after product be transferred completely into centrifuge tube, add isometric n-hexane a ultrasounds point
Dissipate, add isopropanol ultrasound 5min, be put into after ultrasound in centrifuge and 5min is centrifuged with 8500r/min rotating speed, centrifuged
Product I, described n-hexane a and the volume ratio of isopropanol afterwards is 1:3；
2., the product I after centrifugation add n-hexane b ultrasound 5min, add ethanol a ultrasound 5min, be put into after ultrasound from
5min, the product II after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane b and n-hexane a body
Product is than being 1:1；Described n-hexane b and ethanol a volume ratio are 1:3；
3., the product II after centrifugation add n-hexane c ultrasound 5min, add ethanol b ultrasound 5min, be put into after ultrasound from
5min, the product III after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane c's and n-hexane a
Volume ratio is 1:1；Described n-hexane c and ethanol b volume ratio are 1:3；
4., the product III after centrifugation add ethanol c ultrasound 5min, then add distilled water ultrasound 10min, be put into centrifugation after ultrasound
5min, the product IV after being centrifuged are centrifuged with 8500r/min rotating speed in machine；Described ethanol c and ethanol b volume ratio are
1:3；Described ethanol c and the volume ratio of distilled water are 1:3；
5., to the product IV after centrifugation be 60 DEG C in vacuum and temperature under conditions of dry 12h, obtain hard magnetic iron platinum and receive
Rice grain.
The advantage of the invention is that using a kind of simple organic thermal synthesis method, with inorganic salts frerrous chloride and potassium chloroplatinate
For presoma, the nanometer Fe-Pt particle of hard magnetic is prepared in a step；
The inventive method operating process is simple, and cost of material is low, is easy to industrialized production；
Material prepared by the present invention has in fields such as VHD magnetic recording medium, catalysis, bioengineering superpower permanet magnetic bodies
There is potential application value.
The present invention uses simple liquid phase thermal synthesis method, using oleyl amine as solvent, surfactant and reducing agent, in nitrogen gas
High temperature thermal reduction frerrous chloride and potassium chloroplatinate under atmosphere, a step are prepared the hard magnetic L10-FePt with excellent magnetic energy and received
Rice grain, it can also further adjust magnetic property, pattern and the size of product by adjusting heating rate and reaction time.
Brief description of the drawings
Fig. 1 is the TEM photos for testing a hard magnetic nanometer Fe-Pt particle prepared；
Fig. 2 is the XRD spectra for testing a hard magnetic nanometer Fe-Pt particle prepared；
Fig. 3 is the VSM curve maps for testing a hard magnetic nanometer Fe-Pt particle prepared；
Fig. 4 is the TEM photos for testing the two hard magnetic nanometer Fe-Pt particles prepared；
Fig. 5 is the VSM curve maps for testing the two hard magnetic nanometer Fe-Pt particles prepared.
Embodiment
Embodiment one：Present embodiment is that one kind prepares hard magnetic nanometer Fe-Pt particle by presoma of inorganic salts
Method, specifically carry out according to the following steps：
First, protect and mixed under gas：Frerrous chloride, potassium chloroplatinate and oleyl amine are added in three-necked flask, stirred in magnetic force
Mix and stir and be passed through nitrogen purge gas 40min under conditions of room temperature, obtain mixture；Described frerrous chloride and the material of potassium chloroplatinate
Amount ratio be 1:(1~1.2)；Described potassium chloroplatinate and the ratio of the amount of the material of oleyl amine are 1:(150~160)；
2nd, heat：By step 1 prepare mixture magnetic agitation and nitrogen protection under conditions of with 5 DEG C/min~10
DEG C/the min rate of heat addition is heated to 200 DEG C from room temperature, then under the conditions of magnetic agitation, nitrogen protection and temperature are 200 DEG C
It is incubated 4h~5h；Added under conditions of magnetic agitation and nitrogen protection with the 1 DEG C/min~5 DEG C/min rate of heat addition from 200 DEG C
Heat is incubated 4h~8h to 350 DEG C under the conditions of being then 350 DEG C in magnetic agitation, nitrogen protection and temperature；
3rd, cool down：Room temperature is naturally cooled under conditions of magnetic agitation and nitrogen protection；
4th, wash, dry：
1., step 3 is cooled down after product be transferred completely into centrifuge tube, add isometric n-hexane a ultrasounds point
Dissipate, add isopropanol ultrasound 5min, be put into after ultrasound in centrifuge and 5min is centrifuged with 8500r/min rotating speed, centrifuged
Product I, described n-hexane a and the volume ratio of isopropanol afterwards is 1:3；
2., the product I after centrifugation add n-hexane b ultrasound 5min, add ethanol a ultrasound 5min, be put into after ultrasound from
5min, the product II after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane b and n-hexane a body
Product is than being 1:1；Described n-hexane b and ethanol a volume ratio are 1:3；
3., the product II after centrifugation add n-hexane c ultrasound 5min, add ethanol b ultrasound 5min, be put into after ultrasound from
5min, the product III after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane c's and n-hexane a
Volume ratio is 1:1；Described n-hexane c and ethanol b volume ratio are 1:3；
4., the product III after centrifugation add ethanol c ultrasound 5min, then add distilled water ultrasound 10min, be put into centrifugation after ultrasound
5min, the product IV after being centrifuged are centrifuged with 8500r/min rotating speed in machine；Described ethanol c and ethanol b volume ratio are
1:3；Described ethanol c and the volume ratio of distilled water are 1:3；
5., to the product IV after centrifugation be 60 DEG C in vacuum and temperature under conditions of dry 12h, obtain hard magnetic iron platinum and receive
Rice grain.
Embodiment two：Present embodiment is unlike embodiment one：Chlorination described in step 1
The ratio of the amount of ferrous and potassium chloroplatinate material is 1:1.Other are identical with specific embodiment party one.
Embodiment three：Present embodiment is unlike embodiment one：Chlorine platinum described in step 1
The amount ratio of the material of sour potassium and oleyl amine is 1:150.It is other identical with embodiment one.
Embodiment four：Present embodiment is unlike embodiment one：By step 1 system in step 2
Standby mixture is heated to 200 DEG C with the 5 DEG C/min rate of heat addition under conditions of magnetic agitation and nitrogen protection from room temperature, so
4h is incubated under the conditions of being afterwards 200 DEG C in magnetic agitation, nitrogen protection and temperature.It is other identical with embodiment one.
Embodiment five：Present embodiment is unlike embodiment one：In magnetic agitation in step 2
350 DEG C are heated to from 200 DEG C with the 5 DEG C/min rate of heat addition under conditions of being protected with nitrogen, is then protected in magnetic agitation, nitrogen
Shield and temperature are incubated 4h under the conditions of being 350 DEG C.It is other identical with embodiment one.
Effect of the present invention is verified by tests below：
Experiment one：This experiment is a kind of method that hard magnetic nanometer Fe-Pt particle is prepared by presoma of inorganic salts, specifically
Carry out according to the following steps：
First, protect and mixed under gas：Frerrous chloride, potassium chloroplatinate and oleyl amine are added in three-necked flask, stirred in magnetic force
Mix and stir and be passed through nitrogen purge gas 40min under conditions of room temperature, obtain mixture；Described frerrous chloride and the material of potassium chloroplatinate
Amount ratio be 1:1；Described potassium chloroplatinate and the ratio of the amount of the material of oleyl amine are 1:150；
2nd, heat：By step 1 prepare mixture magnetic agitation and nitrogen protection under conditions of with 5 DEG C/min plus
Hot speed is heated to 200 DEG C from room temperature, and 4h is incubated under the conditions of being then 200 DEG C in magnetic agitation, nitrogen protection and temperature；In magnetic
Power stir and nitrogen protection under conditions of with the 5 DEG C/min rate of heat addition is heated to 350 DEG C from 200 DEG C, then magnetic agitation,
Nitrogen protection and temperature are incubated 4h under the conditions of being 350 DEG C；
3rd, cool down：Room temperature is naturally cooled under conditions of magnetic agitation and nitrogen protection；
4th, wash, dry：
1., step 3 is cooled down after product be transferred completely into centrifuge tube, add isometric n-hexane a ultrasounds point
Dissipate, add isopropanol ultrasound 5min, be put into after ultrasound in centrifuge and 5min is centrifuged with 8500r/min rotating speed, centrifuged
Product I, described n-hexane a and the volume ratio of isopropanol afterwards is 1:3；
2., the product I after centrifugation add n-hexane b ultrasound 5min, add ethanol a ultrasound 5min, be put into after ultrasound from
5min, the product II after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane b and n-hexane a body
Product is than being 1:1；Described n-hexane b and ethanol a volume ratio are 1:3；
3., the product II after centrifugation add n-hexane c ultrasound 5min, add ethanol b ultrasound 5min, be put into after ultrasound from
5min, the product III after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane c's and n-hexane a
Volume ratio is 1:1；Described n-hexane c and ethanol b volume ratio are 1:3；
4., the product III after centrifugation add ethanol c ultrasound 5min, then add distilled water ultrasound 10min, be put into centrifugation after ultrasound
5min, the product IV after being centrifuged are centrifuged with 8500r/min rotating speed in machine；Described ethanol c and ethanol b volume ratio are
1:3；Described ethanol c and the volume ratio of distilled water are 1:3；
5., to the product IV after centrifugation be 60 DEG C in vacuum and temperature under conditions of dry 12h, obtain hard magnetic iron platinum and receive
Rice grain.
Experiment two：This experiment is a kind of method that hard magnetic nanometer Fe-Pt particle is prepared by presoma of inorganic salts, specifically
Carry out according to the following steps：
First, protect and mixed under gas：Frerrous chloride, potassium chloroplatinate and oleyl amine are added in three-necked flask, stirred in magnetic force
Mix and stir and be passed through nitrogen purge gas 40min under conditions of room temperature, obtain mixture；Described frerrous chloride and the material of potassium chloroplatinate
Amount ratio be 1:1；Described potassium chloroplatinate and the ratio of the amount of the material of oleyl amine are 1:150；
2nd, heat：By step 1 prepare mixture magnetic agitation and nitrogen protection under conditions of with 5 DEG C/min plus
Hot speed is heated to 200 DEG C from room temperature, and 4h is incubated under the conditions of being then 200 DEG C in magnetic agitation, nitrogen protection and temperature；In magnetic
Power stir and nitrogen protection under conditions of with the 1 DEG C/min rate of heat addition is heated to 350 DEG C from 200 DEG C, then magnetic agitation,
Nitrogen protection and temperature are incubated 4h under the conditions of being 350 DEG C；
3rd, cool down：Room temperature is naturally cooled under conditions of magnetic agitation and nitrogen protection；
4th, wash, dry：
1., step 3 is cooled down after product be transferred completely into centrifuge tube, add isometric n-hexane a ultrasounds point
Dissipate, add isopropanol ultrasound 5min, be put into after ultrasound in centrifuge and 5min is centrifuged with 8500r/min rotating speed, centrifuged
Product I, described n-hexane a and the volume ratio of isopropanol afterwards is 1:3；
2., the product I after centrifugation add n-hexane b ultrasound 5min, add ethanol a ultrasound 5min, be put into after ultrasound from
5min, the product II after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane b and n-hexane a body
Product is than being 1:1；Described n-hexane b and ethanol a volume ratio are 1:3；
3., the product II after centrifugation add n-hexane c ultrasound 5min, add ethanol b ultrasound 5min, be put into after ultrasound from
5min, the product III after being centrifuged are centrifuged with 8500r/min rotating speed in scheming；Described n-hexane c's and n-hexane a
Volume ratio is 1:1；Described n-hexane c and ethanol b volume ratio are 1:3；
4., the product III after centrifugation add ethanol c ultrasound 5min, then add distilled water ultrasound 10min, be put into centrifugation after ultrasound
5min, the product IV after being centrifuged are centrifuged with 8500r/min rotating speed in machine；Described ethanol c and ethanol b volume ratio are
1:3；Described ethanol c and the volume ratio of distilled water are 1:3；
5., to the product IV after centrifugation be 60 DEG C in vacuum and temperature under conditions of dry 12h, obtain hard magnetic iron platinum and receive
Rice grain.
Fig. 1 be test one prepare hard magnetic nanometer Fe-Pt particle TEM photos, it can be seen that FePt nano particles be by
Many little particles are self-assembled into flower-like structure.
Fig. 2 is the XRD for testing a hard magnetic nanometer Fe-Pt particle prepared, the feature of Hard Magnetic phase occurs in XRD spectrum
Peak, i.e. (001) peak and (110) peak, the nanometer Fe-Pt particle for showing to prepare is hard magnetic.
Fig. 3 is the VSM curve maps for testing a hard magnetic nanometer Fe-Pt particle prepared, it can be seen that nanometer Fe-Pt particle has
There are larger coercivity, Ms=17.4emu/g, Hc=6.57kOe.
Fig. 4 be test two prepare hard magnetic nanometer Fe-Pt particles TEM photos, it can be seen that FePt nano particles be by
Many little particles are self-assembled into flower-like structure.
Fig. 5 is the VSM curve maps for testing the two hard magnetic nanometer Fe-Pt particles prepared, it can be seen that nanometer Fe-Pt particle has
There are larger coercivity, Ms=25.4emu/g, Hc=8.4kOe.
Claims (5)
- A kind of 1. method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma, it is characterised in that using inorganic salts before The method that drive body prepares hard magnetic nanometer Fe-Pt particle is carried out according to the following steps：First, protect and mixed under gas：Frerrous chloride, potassium chloroplatinate and oleyl amine are added in three-necked flask, in magnetic agitation and Nitrogen purge gas 40min is passed through under conditions of room temperature, obtains mixture；Described frerrous chloride and the amount of the material of potassium chloroplatinate Ratio be 1:(1~1.2)；Described potassium chloroplatinate and the ratio of the amount of the material of oleyl amine are 1:(150~160)；2nd, heat：By step 1 prepare mixture magnetic agitation and nitrogen protection under conditions of with 5 DEG C/min~10 DEG C/ The min rate of heat addition is heated to 200 DEG C from room temperature, is incubated under the conditions of being then 200 DEG C in magnetic agitation, nitrogen protection and temperature 4h~5h；It is heated under conditions of magnetic agitation and nitrogen protection with the 1 DEG C/min~5 DEG C/min rate of heat addition from 200 DEG C 350 DEG C, 4h~8h is incubated under the conditions of being then 350 DEG C in magnetic agitation, nitrogen protection and temperature；3rd, cool down：Room temperature is naturally cooled under conditions of magnetic agitation and nitrogen protection；4th, wash, dry：1., step 3 is cooled down after product be transferred completely into centrifuge tube, add isometric n-hexane a ultrasonic disperses, then Isopropanol ultrasound 5min is added, is put into after ultrasound in centrifuge and 5min, the production after being centrifuged is centrifuged with 8500r/min rotating speed The volume ratio of thing I, described n-hexane a and isopropanol is 1:3；2., the product I after centrifugation add n-hexane b ultrasound 5min, add ethanol a ultrasound 5min, centrifuge be put into after ultrasound In 5min, the product II after being centrifuged centrifuged with 8500r/min rotating speed；Described n-hexane b and n-hexane a volume ratio For 1:1；Described n-hexane b and ethanol a volume ratio are 1:3；3., the product II after centrifugation add n-hexane c ultrasound 5min, add ethanol b ultrasound 5min, centrifuge be put into after ultrasound In 5min, the product III after being centrifuged centrifuged with 8500r/min rotating speed；Described n-hexane c and n-hexane a volume Than for 1:1；Described n-hexane c and ethanol b volume ratio are 1:3；4., the product III after centrifugation add ethanol c ultrasound 5min, then add distilled water ultrasound 10min, be put into after ultrasound in centrifuge 5min, the product IV after being centrifuged are centrifuged with 8500r/min rotating speed；Described ethanol c and ethanol b volume ratio are 1:3； Described ethanol c and the volume ratio of distilled water are 1:3；5., to the product IV after centrifugation be 60 DEG C in vacuum and temperature under conditions of dry 12h, obtain hard magnetic nanometer Fe-Pt Grain.
- 2. a kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma according to claim 1, its The frerrous chloride and the ratio of the amount of the material of potassium chloroplatinate being characterised by described in step 1 are 1:1.
- 3. a kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma according to claim 1, its The potassium chloroplatinate and the amount ratio of the material of oleyl amine being characterised by described in step 1 are 1:150.
- 4. a kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma according to claim 1, its Be characterised by step 2 by step 1 prepare mixture magnetic agitation and nitrogen protection under conditions of with 5 DEG C/min plus Hot speed is heated to 200 DEG C from room temperature, and 4h is incubated under the conditions of being then 200 DEG C in magnetic agitation, nitrogen protection and temperature.
- 5. a kind of method that hard magnetic nanometer Fe-Pt particle is prepared using inorganic salts as presoma according to claim 1, its It is characterised by step 2 being heated to from 200 DEG C with the 5 DEG C/min rate of heat addition under conditions of magnetic agitation and nitrogen protection 350 DEG C, 4h is incubated under the conditions of being then 350 DEG C in magnetic agitation, nitrogen protection and temperature.
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| CN109604625B (en) * | 2019-02-20 | 2022-03-22 | 哈尔滨工业大学 | Method for preparing platinum-based binary alloy nanoparticles by using transition metal oxide and platinum metal nanoparticles as precursors |
| CN110202166B (en) * | 2019-06-24 | 2021-08-24 | 东北大学 | Chemical method for synthesizing fct-FePt nano particle by liquid phase assisted solid phase sintering |
| CN110560704B (en) * | 2019-10-11 | 2021-10-22 | 东北大学 | Method for inductively synthesizing fct-FePt nano particles by doping low-melting-point elements |
| CN113000836B (en) * | 2021-03-08 | 2022-11-08 | 昆明理工大学 | Nickel coating surface treatment method for NaCl particles |
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| JP2009035769A (en) * | 2007-08-01 | 2009-02-19 | Univ Waseda | METHOD FOR PRODUCING FePt NANOPARTICLE, AND METHOD FOR PRODUCING MAGNETIC RECORDING MEDIUM HAVING FePt MAGNETIC NANOPARTICLE ARRAY |
| CN101530923A (en) * | 2009-02-25 | 2009-09-16 | 同济大学 | Method for preparing Fe-Ni-Pt alloy nanorod |
| CN101524762A (en) * | 2009-04-14 | 2009-09-09 | 上海师范大学 | Method for preparing ferroplatinum nano-particle |
| CN101717071A (en) * | 2009-11-20 | 2010-06-02 | 清华大学 | Method for synthesizing series alloy nanometer crystals |
| CN102029402A (en) * | 2011-01-14 | 2011-04-27 | 武汉理工大学 | Method for synthesizing ferroplatinum alloy nano material |
| CN102218543A (en) * | 2011-05-20 | 2011-10-19 | 湖北大学 | Method for one-step synthesis of FePt nanoparticles with an fct (face centered tetragonal) structure and product thereof |
| CN105081308A (en) * | 2015-08-24 | 2015-11-25 | 中国科学院上海高等研究院 | Curved-surface Pt-based nanometer bimetallic material with and preparation method and application thereof |
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